Name the world organisations concerned with the following
(i) Campaigning for control of endemic goitre
(ii) Supplying food and other facilities to chlidren in schools

(a) Name the causative organisms for the following diseases : (i) Elephantiasis (ii) Ringworn (iii) Amoebiasis (b) How can public hygiene help control such diseases ?

Study the picture given below and answer the following questions : (i) Identify the type of pollution. (ii) Name one pollutant that causes the above pollution. (iii) Mention the impact of this pollution on human health. (iv) State one measure to control this pollution. (v) What is a 'Pollutant ? Explain the term.

Name the food constituents which may be lacking in one's diet, in case of the following : (i) A child having rickets (ii) A person suffering from beri-beri. (iii) A person suffering from anaemia. (iv) A person suffering from scurvy.

Consider the following w.r.t criteria for essentiality of an elements. (i) In the absence of the element the plants do not complete their life cycle or set the seeds (ii) Requirement of the element must be specific and replaceable by another element (iii) Element cannot be directly involved in the metabolism of plant (iv) Deficiency of any one element cannot be met by supplying some other element How many are incorrect?